Patent US3824979A successfully refreshed from Google Patents.
US3824979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recoil starter for an internal combustion engine
Assignee: Kawasaki Heavy Industries Ltd
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Filing: 1972-09-05
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Granted: 1974-07-23
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Expires: 1992-09-05
Abstract
Abstract A recoil starter for an internal combustion engine having a rotatable reel disposed on an engine body and adapted to be rotated in one direction by pulling a length of rope, said reel being provided with a boss protruding therefrom toward a flywheel of the engine. A cylindrical friction member is disposed around the outer periphery of the boss. A pair of cams are provided on the flywheel at two positions opposing to the friction member, each of the cams being brought into engagement with said friction member as the reel is rotated in said one direction and released from the engagement with the friction member under the influence of a centrifugal force produced by increased speed of the engine.
Inventors
- 👤 K Tajika
- 👤 H Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
F; F02; F02N; F02N3/00; F02N3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A starter for combustion engines comprising a rotatable member disposed rotatabhy relative to the engine body, means for rotating said rotatable member in one direction, a cylindrical member rotatable together with said rotatable member having an outer friction surface, cam means supported radially outwardly of said friction surface on a member rotatable together with the crank-shaft of the engine, and resilient means for pressing said cam means against said friction surface, said cam means being positioned to engage said friction surface as said rotatable member is rotated in said one direction and pivotally mounted to be moved away from said friction surface by means of centrifugal force as the rotational speed of the crank-shaft is increased.
Claim 2
Dependent Claim
116 words
A starter for combustion engines comprising a rotatable member disposed rotatabhy relative to the engine body, means for rotating said rotatable member in one direction, a cylindrical member rotatable together with said rotatable member having an outer friction surface, cam means supported radially outwardly of said friction surface on a member rotatable together with the crank-shaft of the engine, and resilient means for pressing said cam means against said friction surface, said cam means being positioned to engage said friction surface as said rotatable member is rotated in said one direction and pivotally mounted to be moved away from said friction surface by means of centrifugal force as the rotational speed of the crank-shaft is increased.
Claim 3
Dependent Claim
45 words
A starter according to claim 1 wherein said rotatable member is in the form of a reel, and a length of rope is wound on said reel with its one end anchored thereto, said rope being utilized in rotating the reel in said one direction.
Claim 4
Dependent Claim
24 words
A starter according to claim 2 wherein said reel is provided with a spring thereon which constantly urges the reel in the other direction.
Claim 5
Dependent Claim
25 words
A starter according to claim 2 wherein said friction surface is located around a boss portion which is formed on the reel to protrude therefrom.
Claim 6
Dependent Claim
48 words
A starter according to chaim 1 wherein said cam means comprises at least a pair of cams mounted rotatably on a flywheel of the engine by means of stubs, and there are provided springs each of which urges the respective cams into an engagement with said friction member.
Claim 7
Dependent Claim
48 words
A starter according to chaim 1 wherein said cam means comprises at least a pair of cams mounted rotatably on a flywheel of the engine by means of stubs, and there are provided springs each of which urges the respective cams into an engagement with said friction member.
Claim 8
Dependent Claim
54 words
A starter according to claim 5 wherein each of said cams has its center of gravity out of Line with the rotational axis of the engine crank-shaft so that as the rotational frequency of the engine is increased, centrifugal force acts on said cam to release it from the engagement with the friction member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |